5.0-dev1

- rewrote and/or optimized all service modules
- rewrote matching and processing modules to optimize readability and performance
- added support for reddit gifs
- fixed various issues with twitter error explanations
- code optimizations and enhancements (such as finally getting rid of ==, prettier and more readable formatting, etc)
- added branch information
- all functions in currentCommit submodule run only once and cache received data
- added a test script. only twitter and soundcloud are 100% covered and tested atm, will add tests (and probably fixes) for the rest of services in next commits
- changed some localization strings for russian
- added more clarity to rate limit message
- moved services folder into processing folder

src/modules/processing/services/vk.js

@@ -0,0 +1,45 @@
+import { xml2json } from "xml-js";
+import { genericUserAgent, maxVideoDuration, services } from "../../config.js";
+import selectQuality from "../../stream/selectQuality.js";
+
+export default async function(obj) {
+    let html;
+    html = await fetch(`https://vk.com/video-${obj.userId}_${obj.videoId}`, {
+        headers: { "user-agent": genericUserAgent }
+    }).then((r) => { return r.text() }).catch(() => { return false });
+    if (!html) return { error: 'ErrorCouldntFetch' };
+    if (!html.includes(`{"lang":`)) return { error: 'ErrorEmptyDownload' };
+
+    let js = JSON.parse('{"lang":' + html.split(`{"lang":`)[1].split(']);')[0]);
+
+    if (!Number(js["mvData"]["is_active_live"]) === 0) return { error: 'ErrorLiveVideo' };
+    if (js["mvData"]["duration"] > maxVideoDuration / 1000) return { error: ['ErrorLengthLimit', maxVideoDuration / 60000] };
+
+    let mpd = JSON.parse(xml2json(js["player"]["params"][0]["manifest"], { compact: true, spaces: 4 }));
+    let repr = mpd["MPD"]["Period"]["AdaptationSet"]["Representation"];
+    if (!mpd["MPD"]["Period"]["AdaptationSet"]["Representation"]) repr = mpd["MPD"]["Period"]["AdaptationSet"][0]["Representation"];
+
+    let selectedQuality,
+        attr = repr[repr.length - 1]["_attributes"], 
+        qualities = Object.keys(services.vk.quality_match);
+    for (let i in qualities) {
+        if (qualities[i] === attr["height"]) {
+            selectedQuality = `url${attr["height"]}`;
+            break
+        }
+        if (qualities[i] === attr["width"]) {
+            selectedQuality = `url${attr["width"]}`;
+            break
+        }
+    }
+
+    let maxQuality = js["player"]["params"][0][selectedQuality].split('type=')[1].slice(0, 1);
+    let userQuality = selectQuality('vk', obj.quality, Object.entries(services.vk.quality_match).reduce((r, [k, v]) => { r[v] = k; return r; })[maxQuality]);
+    let userRepr = repr[services.vk.representation_match[userQuality]]["_attributes"];
+    if (!selectedQuality in js["player"]["params"][0]) return { error: 'ErrorEmptyDownload' };
+
+    return {
+        urls: js["player"]["params"][0][`url${userQuality}`],
+        filename: `vk_${obj.userId}_${obj.videoId}_${userRepr["width"]}x${userRepr['height']}.mp4`
+    }
+}